The KMOS 3D Survey: Data Release and Final Survey Paper*

Abstract

We present the completed KMOS 3D   survey, an integral field spectroscopic survey of 739 galaxies at 0.6 <  z  < 2.7 using the K -band Multi Object Spectrograph (KMOS) at the Very Large Telescope. The KMOS 3D  survey provides a population-wide census of kinematics, star formation, outflows, and nebular gas conditions both on and off the star-forming galaxy main sequence through the spatially resolved and integrated properties of H α , [N ii ], and [S ii ] emission lines. We detect H α emission for 91% of galaxies on the main sequence of star formation and 79% overall. The depth of the survey has allowed us to detect galaxies with star formation rates below 1 M ⊙ yr −1 , as well as to resolve 81% of detected galaxies with ≥3 resolution elements along the kinematic major axis. The detection fraction of H α is a strong function of both color and offset from the main sequence, with the detected and nondetected samples exhibiting different spectral energy distribution shapes. Comparison of H α and UV+IR star formation rates reveal that dust attenuation corrections may be underestimated by 0.5 dex at the highest masses ( ). We confirm our first year results of a high rotation-dominated fraction (monotonic velocity gradient and v rot / ) of 77% for the full KMOS 3D   sample. The rotation-dominated fraction is a function of both stellar mass and redshift, with the strongest evolution measured over the redshift range of the survey for galaxies with . With this paper, we include a final data release of all 739 observed objects ( http://www.mpe.mpg.de/ir/KMOS3D ).